Popup box < 3.8.6 - Admin+ Stored XSS in Categories

2023-11-1300:00:00

Rafael Aristodimou

popup box

categories

admin

stored xss

exploit

6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.1%

JSON

Description The plugin does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

1. Go to "Popup Box > Categories"
2. Add a new category and in the description field add `<script>alert(1)</script>`
3. Save and see the XSS